Woah.
Like seriously, woah.
This blood type is the rarest on earth. only .0004% of the earth's population has it.
It has no Antigens (Or antibodies) so they are extremely vulnerable to illness. It's
most common in Mumbai, where occurrences can happen as often as .01%. Mumbai was
commonly known as Bombay, which is where the name comes from.
Other then India, there has been only three cases recorded.
And I Quote from AnswerBag.com;

"... found only in a Czechoslovakian nurse in 1961 and in a brother and sister in
Massachusetts in 1968."

No blood can be donated to them since their immune system can have violent reactions
to antibodies. They can only receive their blood type.
In one story, a young boy from India needed blood, and only 57 people in India had
the blood.
Fifty. Seven.
My heart goes out to these people, here's to hopes they'll live a nice life.
♥

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